Hi Selina, I have very similar symptoms to you except without the tinnitus. I started off thinking it was my neck (I have a bulging torn disc at C6/7) but now I’ve been diagnosed with vestibular migraine, though I know bad posture and neck tension makes it worse. I just wanted to reassure you about the caloric test. It can be a useful test to have done and although it causes temporary nystagmus, this is a healthy reaction and doesn’t last more than a minute. If you decide to have it, just relax and know it might feel a bit strange but it won’t hurt you.